ra8806 RAIO Technology Inc., ra8806 Datasheet - Page 90

• Manufacturer Part Number: ra8806
• Description: Two Layers Character/graphic Lcd Controller
• Manufacturer: RAIO Technology Inc.

Preliminary Version 1.2
RAiO
TECHNOLOGY INC.
The above flow-chart is an example to create a Full-size in DDRAM1 and show the new font on
screen(DDRAM2). At first, user have to set up the CURX and CURY to define which code data will
be created, and then write 32Bytes bit-map data to DDRAM1. The CURX need to set twice for each
16Bytes data – the left and right of full-size font. Please refer the following Program Example(3). If
we want to create a full-size font as (1) of Figure 6-53 to mapping code – 9205h in Table 6-36. The
result is show (1) of Figure 6-53 on screen.
( REG[12h] [1:0] = 0 1 )
( REG[12h] [6:4] = 010 )
( Set REG[60h],[70h] )
( REG[00h] B3 = 0 )
( REG[12h] B7 = 1 )
Set XY -axis ( X, Y )
first then horizontal
Write Left-half font
Access DDRAM1
Set Cursor shifting
Set Graphic Mode
data to DDRAM1
Direction, vertical
Show DDRAM2
(Set REG[70h])
Y add 1
Start
Figure 6-55 : Flowchart of User-created font in DDRAM1
N0
( Set REG[60h],[70h] )
Write 16 bytes data ?
Write 16 bytes data ?
Write Right-half font
Set XY -axis ( X, Y )
data to DDRAM1
(Set REG[60h])
(Set REG[70h])
X add 1
Y add 1
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Yes
Yes
Two Layers Character/Graphic LCD Controller
N0
( REG[12h] [1:0] = 1 0 )
DDRAM1 to DDRAM2
and execute Memory
( REG[00h] B3 = 1 )
Direction, horizontal
( REG[12h] B7 = 0 )
Set XY -axis ( X, Y )
Set Cursor shifting
Write font data that
already defined at
first then vertical
Access Page2
Set Text Mode
Write CMD
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RA8806